Robin Sachs, who was best known for playing sorcerer Ethan Rayne, the arch nemesis of Giles on Buffy the Vampire Slayer, has died, according to his official website. He was 61.It is unknown what caused Sachs' death. "It is with ...

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Robin Sachs, who was best known for playing sorcerer Ethan Rayne, the arch nemesis of Giles on Buffy the Vampire Slayer, has died, according to his official website. He was 61.

It is unknown what caused Sachs' death. "It is with great sadness that we have to announce the sudden and unexpected passing of Robin Sachs," a statement on his website said. "Please join us in raising a glass to Robin - goodbye, dear friend. Thank you for all the laughter and the cookies. We will miss you so very much."

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The London-born actor got his start in the 1972 British film Vampire Circus. In 1991, he took on the role Adam Carrington in the Dynasty: The Reunion miniseries when original star Gordon Thomson was unavailable.

Sachs enjoyed steady work in several sci-fi TV series including Babylon 5, Star Trek: Voyager, Torchwood: Miracle Day and Buffy the Vampire Slayer, on which he recurred from 1997-2000. He also played the evil General Sarris in the sci-fi spoof movie Galaxy Quest.

In addition to his voiceover work on animated movies and video games, Sachs most recently guest-starred on NCIS as an MI5 inspector.